Indicate the direction and the plane over which the following stress quantities act.

Rectangular: \(\tau_{-x, x} ; \tau_{-y,-y} ; \tau_{z,-y}\).

Polar: \(\tau_{-r, \theta} ; \tau_{\theta, \theta}\).

Spherical: \(\tau_{-\phi, \theta} ; \tau_{-r,-\theta} ; \tau_{r, \phi}\).